SW9VE Slide "slop"?

I just bought a new 9mm Sigma for Christmas. I have only fired 100 rounds through it and am very pleased with it... so far. After stripping and cleaning it, I have noticed that there is a very slight amount of lateral movement of the slide on the rails. To be honest, it may have been that way the whole time, but I never checked for that when I bought it.

Is a tiny bit of side to side movement is normal or am I being too picky? I realize that I do not want it to be too tight or there would be the risk of jamming.

Yeah, I know it is a $350 gun (before rebate), but it is a Smith & Wesson!

And no, I am NOT the type of person who would complain if I was hanged with a new rope!

My son's Sigma 40 had a reliabity issue(Cleaning-non- military type background). Striker not hitting the primer was issue. I am a amatuer gunsmith with a diploma and couldn't fix it. Called S&W- great Tech guys-found out that 1st part they sent me was wrong-there are 4!! striker assemblies(How many Glock siuts?). Got the right one in a entire new slide !!!